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Secure Routing in Multihop Wireless Ad-Hoc Networks With Decode-and-Forward Relaying

机译:具有解码转发中继的多跳无线Ad-Hoc网络中的安全路由

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摘要

In this paper, we study the problem of secure routing in a multihop wireless ad-hoc network in the presence of randomly distributed eavesdroppers. Specifically, the locations of the eavesdroppers are modeled as a homogeneous Poisson point process (PPP) and the source-destination pair is assisted by intermediate relays using the decode-and-forward (DF) strategy. We analytically characterize the physical layer security performance of any chosen multihop path using the end-to-end secure connection probability (SCP) for both colluding and noncolluding eavesdroppers. To facilitate finding an efficient solution to secure routing, we derive accurate approximations of the SCP. Based on the SCP approximations, we study the secure routing problem, which is defined as finding the multihop path having the highest SCP. A revised Bellman–Ford algorithm is adopted to find the optimal path in a distributed manner. Simulation results demonstrate that the proposed secure routing scheme achieves nearly the same performance as exhaustive search.
机译:在本文中,我们研究了存在随机分布的窃听者的情况下,多跳无线自组织网络中的安全路由问题。具体来说,窃听者的位置被建模为同质泊松点过程(PPP),并且源/目的地对由使用解码转发(DF)策略的中间中继协助。我们使用串扰和非串扰窃听者的端到端安全连接概率(SCP)分析地分析任何选定多跳路径的物理层安全性能。为了便于找到有效的解决方案来保护路由,我们得出了SCP的精确近似值。基于SCP近似值,我们研究了安全路由问题,该问题定义为找到具有最高SCP的多跳路径。采用修订的Bellman-Ford算法以分布式方式找到最佳路径。仿真结果表明,提出的安全路由方案与穷举搜索几乎实现了相同的性能。

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